DE102012208128A1 - Adjusting device, particularly longitudinal seat adjustment device for longitudinal adjustment of vehicle seat, comprises drive device, and drive shaft made of cold headed steel, which is manufactured by cold extrusion - Google Patents
Adjusting device, particularly longitudinal seat adjustment device for longitudinal adjustment of vehicle seat, comprises drive device, and drive shaft made of cold headed steel, which is manufactured by cold extrusion Download PDFInfo
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- DE102012208128A1 DE102012208128A1 DE201210208128 DE102012208128A DE102012208128A1 DE 102012208128 A1 DE102012208128 A1 DE 102012208128A1 DE 201210208128 DE201210208128 DE 201210208128 DE 102012208128 A DE102012208128 A DE 102012208128A DE 102012208128 A1 DE102012208128 A1 DE 102012208128A1
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- drive shaft
- adjusting device
- connecting portion
- drive
- adjustment
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/32—Vehicles adapted to transport, to carry or to comprise special loads or objects comprising living accommodation for people, e.g. caravans, camping, or like vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/0224—Non-manual adjustments, e.g. with electrical operation
- B60N2/02246—Electric motors therefor
- B60N2/02253—Electric motors therefor characterised by the transmission between the electric motor and the seat or seat parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
- B60N2/067—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable by linear actuators, e.g. linear screw mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/1635—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the drive mechanism
- B60N2/164—Linear actuator, e.g. screw mechanism
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/1635—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the drive mechanism
- B60N2/166—Worm and worm gear articulations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/18—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other
- B60N2/185—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other characterised by the drive mechanism
- B60N2/1853—Linear actuator, e.g. screw mechanism
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/18—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other
- B60N2/185—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other characterised by the drive mechanism
- B60N2/1871—Worm and worm gear articulations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
- B60N2/2231—Worm and worm gear articulations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
- F16C1/02—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing for conveying rotary movements
- F16C1/08—End connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
- F16C3/023—Shafts; Axles made of several parts, e.g. by welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/32—Vehicles adapted to transport, to carry or to comprise special loads or objects comprising living accommodation for people, e.g. caravans, camping, or like vehicles
- B60P3/36—Auxiliary arrangements; Arrangements of living accommodation; Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
- F16C1/10—Means for transmitting linear movement in a flexible sheathing, e.g. "Bowden-mechanisms"
- F16C1/101—Intermediate connectors for joining portions of split flexible shafts and/or sheathings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/08—Vehicle seats, e.g. in linear movable seats
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Ocean & Marine Engineering (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
Description
Die Erfindung betrifft eine Verstelleinrichtung zum Verstellen eines Verstellteils eines Fahrzeugs nach dem Oberbegriff des Anspruchs 1. The invention relates to an adjusting device for adjusting an adjusting part of a vehicle according to the preamble of
Eine derartige Verstelleinrichtung weist eine Antriebsvorrichtung und eine um eine Drehachse drehbare, durch die Antriebsvorrichtung antreibbare Antriebswelle auf. In die Antriebswelle ist ein Verbindungsabschnitt eingeformt, über den ein Wellenabschnitt entlang einer Drehrichtung um die Drehachse formschlüssig mit der Antriebswelle gekoppelt ist. Such an adjusting device has a drive device and a drive shaft rotatable about an axis of rotation, driven by the drive device. In the drive shaft, a connecting portion is formed, via which a shaft portion along a rotational direction about the rotational axis is positively coupled to the drive shaft.
Bei einer aus der
Flexible Wellen, wie sie aus der
Bei der konventionellen Fertigung einer derartigen Antriebswelle wird zunächst ein Rohling gefertigt, der anschließend in seine äußere Form gedreht wird. Anschließend werden einseitig an einem axialen Ende oder beidseitig an zwei axialen Enden Bohrungen in das Werkstück eingebracht, die zur Ausbildung einer Mehrkant-, beispielsweise Vierkantgeometrie zur Herstellung eines oder zweier Verbindungsabschnitte geräumt werden. Anschließend wird das Werkstück geschliffen und gehärtet. Insgesamt ergibt sich ein Fertigungsprozess, der aus bis zu zehn einzelnen Prozessschritten besteht und demzufolge zeitintensiv, aufwendig und teuer ist. In the conventional production of such a drive shaft, a blank is first manufactured, which is then rotated in its outer shape. Subsequently, holes are introduced into the workpiece on one side at one axial end or on both sides at two axial ends, which holes are cleared to form a polygonal, for example square, geometry for producing one or two connecting sections. Subsequently, the workpiece is ground and hardened. Overall, this results in a manufacturing process that consists of up to ten individual process steps and is therefore time-consuming, expensive and expensive.
Aus der
Aufgabe der vorliegenden Erfindung ist es, eine Verstelleinrichtung zu schaffen, die eine einfache, kostengünstige und schnelle Herstellung insbesondere der Antriebswelle bei Erfüllung der Festigkeitsanforderungen zum Übertragen von Verstellkräften ermöglicht. Object of the present invention is to provide an adjusting device, which allows a simple, inexpensive and fast production of the drive shaft in particular in meeting the strength requirements for transmitting Verstellkräften.
Diese Aufgabe wird durch einen Gegenstand mit den Merkmalen des Anspruchs 1 gelöst. This object is achieved by an article having the features of
Demnach ist vorgesehen, dass die Antriebswelle mittels Fließpressen, insbesondere Kaltfließpressen, hergestellt ist. Accordingly, it is provided that the drive shaft is produced by extrusion, in particular cold extrusion.
Beim Fließpressen handelt es sich um einen Druckumformprozess, bei dem ein Werkstoff unter Einwirkung eines hohen Drucks zum Fließen gebracht und z.B. durch eine formgebende Werkzeugöffnung, die sogenannte Matrize, gepresst wird. Das Kaltfließpressen erfolgt hierbei bei einer Arbeitstemperatur unterhalb der sogenannten Rekristallisationstemperatur. Rekristallisation beschreibt in der Metallkunde den Abbau von Gitterfehlern in Kristalliten durch Neubildung des Gefüges aufgrund von Keimbildung und Kornwachstum. Als Rekristallisationstemperatur wird diejenige Temperatur bezeichnet, bei der ein Werkstoff innerhalb einer Betrachtungszeit vollständig rekristallisiert. Die Rekristallisationstemperatur wird z.B. mit 40 bis 50 % der absoluten Schmelztemperatur angegeben. Extrusion molding is a pressure forming process in which a material is made to flow under the action of a high pressure, e.g. through a shaping tool opening, the so-called die, is pressed. The cold extrusion takes place here at a working temperature below the so-called recrystallization temperature. Recrystallization in metallography describes the degradation of lattice defects in crystallites by new formation of the microstructure due to nucleation and grain growth. Recrystallization temperature is the temperature at which a material completely recrystallizes within a period of observation. The recrystallization temperature is e.g. indicated at 40 to 50% of the absolute melting temperature.
Dadurch, dass die Herstellung der Antriebswelle mittels Fließpressen erfolgt, entfallen die bisher erforderlichen Arbeitsschritte des Drehens, Bohrens und Räumens. Mittels Fließpressen wird ein Rohling in einer Form gefertigt, die in etwa bereits dem späteren, funktionsfähigen Zustand des Werkstücks entspricht. Der Rohling kann beispielsweise ein Aufmaß von ca. Dreizehntel im Vergleich zum fertigen, betriebsbereiten Werkstück aufweisen und wird durch Schleifen in seine gewünschte Form gebracht. The fact that the production of the drive shaft is effected by means of extrusion, eliminates the previously required steps of turning, drilling and broaching. Extrusion is used to produce a blank in a shape that approximately corresponds to the later, functional state of the workpiece. The blank may, for example, have an allowance of approximately thirteenths compared to the finished, ready-to-use workpiece and is brought into its desired shape by grinding.
Bei der Fertigung des Rohlings wird der Verbindungsabschnitt in Form z.B. eines Mehrkants bereits in die Antriebswelle eingeformt, so dass zur Herstellung des Verbindungsabschnitts kein zusätzlicher Arbeitsschritt erforderlich ist. Insbesondere entfällt auf diese Weise der Arbeitsschritt des Bohrens und Räumens, der bisher zur Herstellung eines formschlüssig wirkenden Verbindungsabschnitts erforderlich gewesen ist. In the production of the blank, the connecting portion is formed in the form of, for example, a polygon already in the drive shaft, so that no additional step is required for the preparation of the connecting portion. In particular, eliminates in this way the step of drilling and clearing, the previously for the production of a has been required positively acting connection section.
Die Antriebswelle kann beispielsweise aus einem Kaltstauchstahl gefertigt sein, beispielsweise Werkstoffen mit der Bezeichnung C15E2C (Cq15) oder 33B2 (entsprechend der
Nach der Formung des Rohlings mittels Fließpressen kann das metallische Werkstück in einem zusätzlichen Arbeitsgang durch Aufkohlen behandelt werden. Beim Aufkohlen, auch Carburieren genannt, handelt es sich um ein Wärmebehandlungsverfahren zum Zwecke einer Oberflächenhärtung. Dabei werden in dem Werkstück, insbesondere in äußeren Randschichten des Werkstücks, Kohlenstoffatome ins Metallgitter eingelagert. Anschließend wird die Randschicht bis zu einer Tiefe von ca. 1 mm mittels Induktivhärten gehärtet und auf Endmaß geschliffen. Der Prozess des Aufkohlens kann auch entfallen, falls die Härte des Werkstücks nach dem Kaltfließpressvorgang ausreichend groß ist. In diesem Fall kann unmittelbar nach dem Kaltfließpressvorgang das Schleifen auf Endmaß erfolgen. After shaping the blank by extrusion, the metallic workpiece can be treated by carburizing in an additional operation. When carburizing, also called carburizing, it is a heat treatment process for the purpose of surface hardening. In this case, carbon atoms are incorporated into the metal grid in the workpiece, in particular in outer edge layers of the workpiece. Subsequently, the surface layer is hardened to a depth of about 1 mm by means of inductive hardening and ground to final dimensions. The process of carburizing can also be omitted if the hardness of the workpiece after the cold extrusion process is sufficiently large. In this case, immediately after the cold extrusion process, the grinding can be made to final dimension.
Der Verbindungsabschnitt ist vorzugsweise durch einen sich abschnittsweise entlang der Drehachse erstreckten Mehrkant, insbesondere einen Vierkant ausgebildet. Der Verbindungsabschnitt weist somit im Querschnitt zur Drehachse eine mehrkantige, insbesondere vierkantige Form auf, die bewirkt, dass ein Wellenabschnitt, beispielsweise eine flexible Welle, die mit ihrem entsprechend geformten Endabschnitt in den Verbindungsabschnitt eingesteckt wird, formschlüssig in dem Verbindungsabschnitt gehalten und auf diese Weise bei einer Drehbewegung der Antriebswelle mitbewegt wird. The connecting section is preferably formed by a polygon extending in sections along the axis of rotation, in particular a square. The connecting portion thus has in cross-section to the axis of rotation a polygonal, in particular four-edged shape, which causes a shaft portion, such as a flexible shaft, which is inserted with its correspondingly shaped end portion in the connecting portion, positively held in the connecting portion and in this way at a rotational movement of the drive shaft is moved.
Um sicherzustellen, dass mittels der Antriebswelle die im Betrieb auftretenden Verstellkräfte in zuverlässiger Weise übertragen werden können, muss der Außendurchmesser der Antriebswelle so groß gewählt werden, dass die Antriebswelle insbesondere im Bereich des Verbindungsabschnitts nicht ausbricht. Beispielsweise kann der Außendurchmesser der Antriebswelle im Bereich des Verbindungsabschnitts mindestens dem Doppelten der lichten Weite des Verbindungsabschnitts entsprechen. Unter der lichten Weite des Verbindungsabschnitts wird hierbei der Durchmesser eines gedachten, die Innenfläche des Verbindungsabschnitts berührenden Kreises verstanden. Bei Ausbildung des Verbindungsabschnitts als Vierkant entspricht die lichte Weite im Wesentlichen der Kantenlänge des im Querschnitt quadratischen Innenprofils des Vierkants. To ensure that by means of the drive shaft, the adjusting forces occurring during operation can be transmitted in a reliable manner, the outer diameter of the drive shaft must be chosen so large that the drive shaft does not break, especially in the region of the connecting portion. For example, the outer diameter of the drive shaft in the region of the connecting portion may correspond to at least twice the clear width of the connecting portion. In this case, the clear width of the connection section is understood to be the diameter of an imaginary circle touching the inner surface of the connection section. When forming the connecting portion as a square, the inside width essentially corresponds to the edge length of the square profile of the square in the square.
Dadurch, dass der Außendurchmesser der Antriebswelle mindestens doppelt so groß ist wie die lichte Weite des Verbindungsabschnitts, ergibt sich eine Wandungsstärke der Antriebswelle im Bereich des Verbindungsabschnitts, die größer ist als die halbe lichte Weite des Verbindungsabschnitts. Beträgt der Außendurchmesser der Antriebswelle beispielsweise 8 mm und die lichte Weite des Verbindungsabschnitts 4 mm, so beträgt die Wandungsstärke ca. 2 mm. Dadurch, dass die Wandungsstärke hinreichend stark gewählt wird, können über den Verbindungsabschnitt die erforderlichen Verstellkräfte in zuverlässiger Weise übertragen werden, wobei die Wandungsstärke abhängig von der Größe der maximal auftretenden Verstellkräfte zu wählen und die Antriebswelle somit in geeigneter Weise zu dimensionieren ist. Characterized in that the outer diameter of the drive shaft is at least twice as large as the inside diameter of the connecting portion, results in a wall thickness of the drive shaft in the region of the connecting portion, which is greater than half the clear width of the connecting portion. If, for example, the outer diameter of the drive shaft is 8 mm and the clear width of the connecting section is 4 mm, the wall thickness is approximately 2 mm. Characterized in that the wall thickness is chosen sufficiently strong, the necessary adjustment forces can be transmitted in a reliable manner over the connecting portion, the wall thickness depends on the size of the maximum adjustment forces to be selected and the drive shaft is thus dimensioned in a suitable manner.
Ist der Verbindungsabschnitt als Vierkant ausgebildet, so kann die Kantenlänge des quadratischen Profils des Vierkants beispielsweise 3,2 mm betragen. Der Außendurchmesser der Antriebswelle sollte dann mindestens 6 mm betragen. If the connecting portion is formed as a square, then the edge length of the square profile of the square can be 3.2 mm, for example. The outer diameter of the drive shaft should then be at least 6 mm.
Die Antriebswelle kann einen einzigen Verbindungsabschnitt zur Verbindung mit einem z.B. als flexible Welle ausgebildeten Wellenabschnitt aufweisen, wobei der Verbindungsabschnitt vorteilhafterweise in ein axiales Ende der Antriebswelle eingeformt ist und der Verbindungsabschnitt somit sich axial in die Antriebswelle hinein erstreckt. Vorteilhafterweise, insbesondere bei Ausbildung der Verstelleinrichtung als Sitzlängsverstelleinrichtung zum Verstellen eines Fahrzeugsitzes, kann die Antriebswelle zwei Verbindungsabschnitte aufweisen, die an gegenüberliegenden axialen Enden der Antriebswelle in die Antriebswelle eingeformt sind und sich jeweils axial von dem zugeordneten axialen Ende entlang der Drehachse in die Antriebswelle hinein erstrecken. Über die beiden Verbindungsabschnitte kann die Antriebswelle dann mit zwei Wellenabschnitten, insbesondere zwei flexiblen Wellen zur Kopplung mit zugeordneten Verstellgetrieben oder dergleichen verbunden werden, wobei bei einer Drehbewegung der Antriebswelle beide Wellenabschnitte in synchroner Weise zusammen mit der Antriebswelle bewegt und angetrieben werden. The drive shaft may have a single connecting portion for connection to e.g. Shaft portion formed as a flexible shaft, wherein the connecting portion is advantageously formed in an axial end of the drive shaft and thus the connecting portion extends axially into the drive shaft. Advantageously, in particular when the adjusting device is designed as a seat-length adjusting device for adjusting a vehicle seat, the drive shaft can have two connecting sections which are formed in the drive shaft at opposite axial ends of the drive shaft and each extend axially from the associated axial end along the axis of rotation into the drive shaft , About the two connecting portions, the drive shaft can then be connected to two shaft sections, in particular two flexible shafts for coupling with associated adjustment or the like, wherein upon rotation of the drive shaft, both shaft sections are moved and driven in synchronism with the drive shaft.
Der Verbindungsabschnitt kann axial direkt in ein axiales Ende der Antriebswelle eingeformt sein, so dass der Verbindungsabschnitt unmittelbar an eine Stirnseite der Antriebswelle anschließt. Denkbar und möglich ist aber auch, dass in die Antriebswelle an einem axialen Ende ein Hohlabschnitt eingeformt ist, so dass die Antriebswelle im Bereich des zugeordneten axialen Endes als Hohlwelle ausgebildet ist. An den Hohlabschnitt kann dann der Verbindungsabschnitt anschließen, so dass sich der Verbindungsabschnitt vom Boden des Hohlabschnitts in die Antriebswelle axial hineinerstreckt. The connecting portion may be axially formed directly in an axial end of the drive shaft, so that the connecting portion directly adjoins an end face of the drive shaft. It is also conceivable and possible, however, for a hollow section to be formed in the drive shaft at one axial end, so that the drive shaft is designed as a hollow shaft in the region of the associated axial end. The connecting section can then adjoin the hollow section, so that the connecting section extends axially from the bottom of the hollow section into the drive shaft.
Bei geeigneter Dimensionierung des Außendurchmessers der Antriebswelle wird es möglich, die Verbindungsabschnitte mit vergleichsweise großer Tiefe in die Antriebswelle einzuformen, so dass die axiale Tiefe des Verbindungsabschnitts beispielsweise größer als 10 mm, vorzugsweise größer als 13 mm oder gar 15 mm betragen kann. Je größer die axiale Tiefe des Verbindungsabschnitts, desto größer ist die Länge des Wellenabschnitts, über die eine Wirkverbindung mit der Antriebswelle hergestellt wird und desto geringer ist die Flächenpressung im Verbindungsabschnitt. With a suitable dimensioning of the outer diameter of the drive shaft, it is possible to mold the connecting sections with comparatively great depth into the drive shaft, so that the axial depth of the connecting section can be, for example, greater than 10 mm, preferably greater than 13 mm or even 15 mm. The greater the axial depth of the connecting portion, the greater the length of the shaft portion over which an operative connection with the drive shaft is made and the lower the surface pressure in the connecting portion.
Die Antriebswelle ist Bestandteil der Antriebsvorrichtung und wird im Betrieb angetrieben und in eine Drehbewegung versetzt. Die Antriebswelle ist hierbei mit einem Rotor der Antriebsvorrichtung verbunden, indem beispielsweise Rotorbleche an der Antriebswelle angeordnet und fest mit dieser verbunden sind. Die Antriebswelle läuft in einem Stator der Antriebsvorrichtung um, so dass im Betrieb die Antriebswelle in eine Drehbewegung relativ zu dem Stator versetzt wird und die mit der Antriebswelle gekoppelten Wellenabschnitte zur Übertragung eines Drehmoments mitnimmt. The drive shaft is part of the drive device and is driven during operation and placed in a rotary motion. The drive shaft is in this case connected to a rotor of the drive device by, for example, rotor laminations are arranged on the drive shaft and fixedly connected thereto. The drive shaft rotates in a stator of the drive device, so that in operation, the drive shaft is set in a rotational movement relative to the stator and entrains the shaft sections coupled to the drive shaft for transmitting a torque.
Der der Erfindung zugrunde liegende Gedanke soll nachfolgend anhand der in den Figuren dargestellten Ausführungsbeispiele näher erläutert werden. Es zeigen: The idea underlying the invention will be explained in more detail with reference to the embodiments illustrated in the figures. Show it:
Die Verstelleinrichtung
Die Antriebswelle
Die Antriebswelle
Der erste Verbindungsabschnitt
An beiden axialen Stirnseiten der Antriebswelle
Die Verbindungsabschnitte
Die axiale Tiefe T3 des Hohlabschnitts
Um bei der mittels Kaltfließpressen hergestellten Antriebswelle
Das Vierkantprofil der Verbindungsabschnitte
Eine flexible Welle
An der Stirnseite der Antriebswelle
Durch Herstellen der Antriebswelle
Um das Werkstück nach dem Schleifen zu härten, kann das Werkstück einer Wärmebehandlung (dem so genannten „Aufkohlen“) unterzogen werden, bei dem äußere Randschichten des Werkstücks mit Kohlenstoff angereichert und auf diese Weise gehärtet werden. Der innere Kern der Antriebswelle
Der der Erfindung zugrunde liegende Gedanke ist nicht auf die vorangehend dargestellten Ausführungsbeispiele beschränkt. Insbesondere kann die Antriebswelle auch lediglich mit einem einzigen Verbindungsabschnitt zur Verbindung mit einem einzigen Wellenabschnitt ausgebildet sein. Der Verbindungsabschnitt muss zudem nicht zwangsläufig als Vierkantprofil geformt sein, sondern kann grundsätzlich beispielsweise auch als Fünfkant oder Sechskant ausgebildet sein, um eine formschlüssige Verbindung eines Wellenabschnitts mit der Antriebswelle herzustellen. The idea underlying the invention is not limited to the embodiments described above. In particular, the drive shaft may also be formed with only a single connecting portion for connection to a single shaft portion. In addition, the connecting section does not necessarily have to be shaped as a square profile, but in principle may also be designed, for example, as a pentagon or hexagon in order to produce a positive connection of a shaft section to the drive shaft.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 1 1
- Verstelleinrichtung adjustment
- 1010
- Antriebsvorrichtung driving device
- 100100
- Rotor rotor
- 11, 1211, 12
- Wellenabschnitt (Flexible Welle) Shaft section (flexible shaft)
- 2, 32, 3
- Führungsschiene guide rail
- 2020
- Verstellgetriebe variator
- 44
- Antriebswelle drive shaft
- 40, 4140, 41
- Verbindungsabschnitt (Vierkant) Connecting section (square)
- 400400
- Einführtrichter insertion funnel
- 401401
- Kerbe score
- 4242
- Hohlabschnitt hollow section
- 420420
- Einführtrichter insertion funnel
- 421421
- Kerbe score
- B1, B2B1, B2
- Kantenlänge edge length
- D, D1, D2D, D1, D2
- Durchmesser diameter
- T1, T2, T3T1, T2, T3
- Tiefe depth
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- EP 1701861 B1 [0003, 0004, 0028, 0029] EP 1701861 B1 [0003, 0004, 0028, 0029]
- EP 0052077 B1 [0006, 0006] EP 0052077 B1 [0006, 0006]
Zitierte Nicht-PatentliteraturCited non-patent literature
- DIN EN10263 [0013] DIN EN10263 [0013]
Claims (11)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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DE202012013635.6U DE202012013635U1 (en) | 2012-05-15 | 2012-05-15 | Adjusting device with a drive shaft |
DE102012208128.3A DE102012208128B4 (en) | 2012-05-15 | 2012-05-15 | Adjusting device with a drive shaft and method for producing an adjusting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102012208128.3A DE102012208128B4 (en) | 2012-05-15 | 2012-05-15 | Adjusting device with a drive shaft and method for producing an adjusting device |
Publications (2)
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DE102012208128A1 true DE102012208128A1 (en) | 2013-11-21 |
DE102012208128B4 DE102012208128B4 (en) | 2021-10-21 |
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DE202012013635.6U Expired - Lifetime DE202012013635U1 (en) | 2012-05-15 | 2012-05-15 | Adjusting device with a drive shaft |
DE102012208128.3A Active DE102012208128B4 (en) | 2012-05-15 | 2012-05-15 | Adjusting device with a drive shaft and method for producing an adjusting device |
Family Applications Before (1)
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DE202012013635.6U Expired - Lifetime DE202012013635U1 (en) | 2012-05-15 | 2012-05-15 | Adjusting device with a drive shaft |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3315800A1 (en) * | 2016-10-31 | 2018-05-02 | Andreas Stihl AG & Co. KG | Drive shaft in a hand-held work device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102022104330A1 (en) | 2022-02-23 | 2023-08-24 | Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Coburg | Vehicle seat assembly with two vehicle seats that can be spaced apart transversely |
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EP0052077B1 (en) | 1980-11-06 | 1985-01-16 | Colcon Anstalt | Method of producing an axially symmetrical hollow shaft |
US5127253A (en) * | 1989-05-19 | 1992-07-07 | Mitsuba Electric Mfg., Co., Ltd. | Method and apparatus for manufacturing a cold-forged shaft |
DE10034410A1 (en) * | 2000-07-14 | 2002-01-24 | Bosch Gmbh Robert | Method for producing a shaft and device comprising such a shaft |
EP1701861B1 (en) | 2004-01-09 | 2008-04-09 | IMS Gear GmbH | Drive for adjusting motor vehicle seats |
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- 2012-05-15 DE DE202012013635.6U patent/DE202012013635U1/en not_active Expired - Lifetime
- 2012-05-15 DE DE102012208128.3A patent/DE102012208128B4/en active Active
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US3886649A (en) * | 1973-08-01 | 1975-06-03 | Joseph A Simon | Process for cold forming a metal tube with an inwardly thickened end |
EP0052077B1 (en) | 1980-11-06 | 1985-01-16 | Colcon Anstalt | Method of producing an axially symmetrical hollow shaft |
US5127253A (en) * | 1989-05-19 | 1992-07-07 | Mitsuba Electric Mfg., Co., Ltd. | Method and apparatus for manufacturing a cold-forged shaft |
DE10034410A1 (en) * | 2000-07-14 | 2002-01-24 | Bosch Gmbh Robert | Method for producing a shaft and device comprising such a shaft |
EP1701861B1 (en) | 2004-01-09 | 2008-04-09 | IMS Gear GmbH | Drive for adjusting motor vehicle seats |
DE102008014241A1 (en) * | 2007-04-02 | 2008-10-09 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Method for producing a conical disk and conical disk and conical-pulley transmission |
DE102008028098A1 (en) * | 2008-06-13 | 2009-12-17 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Adjustment fitting, particularly for vehicle seating, has fitting section, where carrier component is connected with outer wheel in frictional and cohesive manner |
DE102008028103A1 (en) * | 2008-06-13 | 2009-12-17 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Adjustment bracket for vehicle seat, has external wall overlapping external tooth, and inner wheel comprising inner wall that extends in axial direction over external tooth, where inner wall penetrates flange in axial direction |
DE102009008560A1 (en) * | 2009-02-12 | 2010-08-19 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Drive shaft manufacturing method for drive assembly for motor-driven adjustment of window of motor vehicle, involves transforming metallic drive shaft blank such that drive shaft blank comprises sections of different dimensions |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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EP3315800A1 (en) * | 2016-10-31 | 2018-05-02 | Andreas Stihl AG & Co. KG | Drive shaft in a hand-held work device |
US10670070B2 (en) | 2016-10-31 | 2020-06-02 | Andreas Stihl Ag & Co. Kg | Drive shaft in a handheld work apparatus |
Also Published As
Publication number | Publication date |
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DE202012013635U1 (en) | 2018-10-30 |
DE102012208128B4 (en) | 2021-10-21 |
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